Bangladesh University of Engineering and Technology
Project Summary: Load Calculation of an apartment
building at 250, New Elephant Road, Dhaka
Submitted by
Abul Borkot Md Rafiqul Hasan
Student No: 1310094
Unconditioned space
Sunlight
Sunlight
Unconditioned space
Unconditioned space
Entrance
Figure: Schematic diagram of my living apartment for load calculation
Description of the apartment:
Location : Dhaka, Capital city of Bangladesh.
Floor : 3rd Floor.
Availability of Sunlight : South and West.
Shadow/Other building : East and North.
No of Windows : 2
No of Doors : 6
Occupants : 4
Equipment: 4 (Laptop)
Light : Florescent bulb.
Table : Summury of Load calculation in the apartment at Dhaka
Heat conduction through shaded portion
Item
Wall
Wall
Wall
Door
Window
Floor
Roof
Description
East
West
North
North
North
A
18
18
5.2
2
4.8
24
24
U
2.36
2.36
2.36
0.413
5.55
2.68
2.68
Q=A*U*TD (W)
318.6
191.16
92.04
6.195
199.8
289.44
289.44
TD
7.5
4.5
7.5
7.5
7.5
4.5
4.5
Total
1386.675
Heat conduction through sunlit portion
Q=A*U*
CLTD(W)
Description
A
U
CLTD
South
5.2
2.36 17.5
214.76
South
2
0.413 17.5
14.455
South
4.8
2.54 17.5
213.36
442.575
Item
Wall
Door
Window
Total
Solar heat gain
Item
Description
A
CLF
Sc
SHGF
Q=A*CLF*Sc*
SHGF(W)
Window
South
4.8
0.43
0.88
237
430.46784
Description
Qs(W) Ql(W) Total(W) %
Total heat calculation
Item
Heat conduction
through partition
wall
Heat conduction
through sunlit
wall
Solar heat gain
Air exchange
Four occupants
Light
Equipments
South
Flurecent
Four laptop
Total heat gain
Total Cooling load(W)
4008.64284
1386 0
1386
34.57529282
442.6
430.5
180
300
117.3
240
442.575
430.4678
872.3
520
117.3
240
11.04051964
10.73849323
21.76048191
12.97197133
2.926177379
5.987063692
0
0
692.3
220
0
0
3096 912.3 4008.643 100
Ton of refrigeration
1.138818989